Which room type is typically required for airborne isolation?

Which room type is typically required for airborne isolation?

• A. Positive pressure room.
• B. Negative pressure room.
• C. Standard patient room with no special pressure.
• D. Isolation ward with standard ventilation.

Answer: (B)

Airborne isolation relies on containing contagious particles by maintaining a negative pressure differential between the isolation room and surrounding spaces. In a negative pressure room, the room is kept at lower pressure than adjacent areas, so air flows into the room rather than out when doors are opened. This direction of airflow helps prevent contaminated air from escaping to hallways or other rooms, as the exhaust (often through outside vents or HEPA filtration) removes the pathogens from the environment. A positive pressure room would push air from inside the room into adjacent spaces, potentially spreading airborne infection, while standard or non‑specialized ventilation does not provide the necessary containment. For effective airborne isolation, the room also typically meets ventilation standards like adequate air changes per hour and proper door management to maintain the pressure differential.

Airborne isolation relies on containing contagious particles by maintaining a negative pressure differential between the isolation room and surrounding spaces. In a negative pressure room, the room is kept at lower pressure than adjacent areas, so air flows into the room rather than out when doors are opened. This direction of airflow helps prevent contaminated air from escaping to hallways or other rooms, as the exhaust (often through outside vents or HEPA filtration) removes the pathogens from the environment. A positive pressure room would push air from inside the room into adjacent spaces, potentially spreading airborne infection, while standard or non‑specialized ventilation does not provide the necessary containment. For effective airborne isolation, the room also typically meets ventilation standards like adequate air changes per hour and proper door management to maintain the pressure differential.